Stable, small, and water-soluble Cu-doped ZnS quantum dots prepared via femtosecond laser ablation

Zheng, Jinju; Zheng, Zhong; Gong, Weiwei; Hu, Xin; Gao, Wei; Ren, Xinguang; Zhao, Haifeng

doi:10.1016/j.cplett.2008.10.014

Cited by 29 publications

(10 citation statements)

References 32 publications

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“…2) can be caused by quantum-sized effects in the nanoscale particles, which are present in the trap-collected materials. As it is known [23][24][25][26][27][28][29], particulate ZnS with particle sizes D ≤ 5…7 nm clearly shows the quantum-dimensional properties, namely, the PL and interband absorption spectra of these particles are shifted towards shorter wavelengths, and this shift by the order of its magnitude correlates with the observed shift of ~15 nm in the PL spectrum shown in Fig. 2b.…”

Section: Resultssupporting

confidence: 50%

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

Yu¹,

Lashkaryov²

2014

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Fine-dispersed ZnS doped with Cu was prepared using self-propagating hightemperature synthesis. In the photoluminescence excitation spectra, the blue shift of the host lattice excitation peak is observed for powder ZnS:Cu that contains nano-and mesosized (submicron) particles. The obtained spectra indicate that radiative recombination in meso-sized particles is significantly reduced as compared to micro-sized particles, which can be caused by the increase of non-radiative relaxation processes in surface states.

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Section: Resultssupporting

confidence: 50%

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

Yu¹,

Lashkaryov²

2014

Semicond. Phys. Quantum Electron. Optoelectron.

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“…There have been various synthetic approaches reported in synthesis of doped QDs [16][17][18][19][20][21][22][23][24] and several good reviews or research articles on this subject [11,[25][26][27][28][29][30]. In 2001, Norris et al [16] first demonstrated successful doping of Mn 2 + into ZnSe colloidal nanocrystals through organometallic synthesis at 240-300 1C.…”

Section: Introductionmentioning

confidence: 97%

RETRACTED: Investigation on manganese-doped ZnSe QDs prepared from self-assembled template of reverse micelle

Qiu

Heckler

Wang

et al. 2010

Journal of Luminescence

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“…Among transitional metal and/or rare earth metal doped ZnS materials, Cu-doped ZnS NCs, with green emission under excitation, have been applied in many fields, such as displays, sensors, and biomedical labeling [19][20][21][22]. The luminescence properties of Cu doped ZnS NCs have synthesized chemically which depend on the surface structure and the surrounding chemical environment.…”

Section: Luminescence Enhancement Of Zns:cu Nanocrystalsmentioning

confidence: 99%

Luminescence Enhancement of ZnS:Cu Nanocrystals by Zinc Sulfide Coating with Core/Shell Structure

Zhang

Long

Zhang

et al. 2014

Integrated Ferroelectrics

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Via wet chemical method with organic assistant, ZnS:Cu/ZnS core/shell structure was prepared. X-ray diffraction measurements showed that ZnS:Cu was formed with zinc blende structure, and ZnS shell growth on the surface was indicated through a redshift in the UV-Vis absorption spectra with increasing particle size. The emission peak at about 510 nm was observed, which should be assigned to recombination of an electron from the shallow delocalized donor levels at the t 2 level of Cu 2+ centers. As passivation layer, effect of ZnS shell on luminescence intensity and lifetime of ZnS:Cu were investigated. Comparing with uncoated ZnS:Cu, ZnS shell really enhanced the luminescence intensity and lifetime significantly, which resulted from the reduction of nonradiative recombination sites.

show abstract

Stable, small, and water-soluble Cu-doped ZnS quantum dots prepared via femtosecond laser ablation

Cited by 29 publications

References 32 publications

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

RETRACTED: Investigation on manganese-doped ZnSe QDs prepared from self-assembled template of reverse micelle

Luminescence Enhancement of ZnS:Cu Nanocrystals by Zinc Sulfide Coating with Core/Shell Structure

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